Secrets Underground

4:00 AM to 5:00 AM

Tuesday 1 October

Mystery of the Ice Cave

Season 2 Episode 6 of 8

A strange cave freezes in summer and melts in winter, and a huge sand dune swallows a small child in an instant. Rob and Stefan explore these mysteries

Secrets Underground airs on Discovery Science at 4:00 AM, Tuesday 1 October. (Subtitles, audio description.)

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